Production of radiant heat



Nov. 3, 1925.

. B. BARK PRODUCTION OF RADIANT HEAT Filed Feb. 5, 1923 2 Sheets-Sheet 1 Fig.1.

2 Sheets-Sheet 2 Nov. 3, 1925.

Filed Feb.

B BARK PRODUCTION OF RADIANT HEAT Patented Nov. 3, 1925.

issues? BENJAMIN BARK, 0F ISLE-WORTH, ENGLAND.

PRODUCTION O'F RADIANT HEAT.

Application filed February 5, 1923. Serial No. 617,020.

To all whom it may concern:

Be it known that I, BENJAMIN BARK, a subject of the King of Great Britain, residing at Isleworth, Middlesex, England, have invented new and useful Improvements Relating to the Production of Radiant Heat, of which the following is a specification.

This invention relates to an improved method of and apparatus for the production of radiant heat by the combustion of the vapor of petroleum or other liquid fuel which is nonvolatile at normal atmospheric temperatures and pressures, and hereinafter referred to as oil, suitable for use with burners or stoves of the wickless type.

According to my invention, the radiant heat is produced by means of perforated tubes of refractory material arranged in combination with a burner or stove of the wickless type for burning oil. Various constructional forms of such combination are hereinafter described.

In the accompanying drawings- Figure 1 is a sectional plan on the line 11 of Figure 2, and Figure 2 a sectional elevation on the line 22 of Figure 1 illustrating a combined vaporizer and burner.

Figure 3 shows a modified construction for regulating the supply through the vaporizer tube.

Figures 4 to 7 show a modification of the combined construction of the vaporizer and burner. Figure 4 is a plan with parts broken away; Figure 5 is an elevation, partly in section, with certain parts broken away; Figure 6 is a side elevation and Figure 7 a sectional elevation on the line 77 of Figure 4.

In the drawings similar parts are denoted by the same reference numerals.

In the construction shown in Figures 1 and 2 the vaporizing tube and the burner are combined. The supply of oil from the tank 41 to the delivery pipe 42 is controlled by a cook 43; the delivery pipe is connected in any suitable manner to a union on the vaporizing tube 44 which is connected by a U-shaped Bunsen tube 45 to the burner body 46 in which a tube 47 forms an extension of the tube 45 so that the mixture of vaporized oil from the pipe 44' and air entering the tube 45 through openings 48 is directed to the end wall 49 of the burner 46; the main volume of fuel passes out of the tube 47 and leaves by the nozzles 29 which are preferably-arranged in a raised platform 71 formed integrally with, and forming part of the burner body 46. Over the nozzles 29 tubes of refractory material 32 may be supported, for instance by a plate 50 which rises up from the back of the burner and has an over-hung head perforated to receive the top of the refractory tubes.

In order to heat the vaporizing tube 44, perforated bosses 51 are formed on the side of the burner body, so that, when the combustible mixture is ignited, the flame impinges on the tube 44 and vaporizes the oil passing therethrough. A restricted vapor passage 52 is controlled by a valve 53. The head of the valve 53 is provided with a needle 54, which acts as a pricker to clear the passageway.

A modified construction of means for regulating the flow to the tube 45 is shown in Figure 3, in which a rod 55 is rotatably mounted to advance the valve 53 to or from the jet member 52, the rod 55 being provided with helical grooves 55 forming a pathway for the oil, which enters through a union member 56.

I In the construction shown it will be observed that the member 45 can be separated from theburner body 46 and also from the tube 44 so that the construction affords every convenience for cleaning. In order to assure its alignment, the tube 44 is externally provided with a lug 57 over which engages a latch 58, pivotally mounted on an attachment 59 on the burner body.

In order to prevent the flames in the openings in the bosses 51 from being blown out,

a baffle 60 is provided which is so constructed that the combustible mixture from the openings rises up towards the nozzles 29, whereupon ignition would take place if there has no flame at the openings in the bosses 51.

In the construction shown in Figures 4 to 7, two short tubes 61 and 62 are connected by a tubular member 63, all three being preferably cast in one. The tube 61 is connected to a vaporizing tube 72, while the tube 62 receives at one end a gland packing device 64, through which a rod 65 carrying a valve 66 is introduced to control a restricted opening 67 at the other end of the tube 62, the part 67 forming the jet of the system. The tube is tapered and fits into a correspondingly tapered end 69 of the axial tube 78, arranged in the burner body 46 like the tube 47 is arranged in the burner body, do (Figure 1). Openings 70 in the end 69 admit air to the burner body.

In this construction two vaporizing tubes 7 2 are provided, which in the example illustrated are of rectangular cross section, and the burner body 4:6" is provided with two lines of small perforations 73 for the passage of a portion of the vaporized fuel to heat the tubes 72, and a raised platform 71. One of the tubes 72 is provided with a nipple 7a which may be connected to a union for supplying the oil, While at the other end the tubes 72 are connected by a cross tube 7 5, which is supported on a boss 76 carried by the burner. The oil, therefore, enters by the nipple 74 and then flows through the tube 72, the cross tube 75, the other tube 72, through the Bunsen tube, to the burner body, the main volume finding the exit, through the nozzles 29 arranged in the platform 71".

Each vaporizer tube is preferably provided with a baffle 77 as shown in Figures at, 6 and 7.

Owing to the provision of a battle, itthe flow from the nozzles 29 is ignited, a portion passing through the openings 73 will flow upwardly, guided by the bafiles, past the nozzles 29 and become ignited. The flame will then travel down to the openings and will impinge on the vaporizing tubes.

The Bunsen tube of the burner body may be of Venturi sect-ion, as indicated at 78 in Figure 5.

Below the vaporizer tubes in any of the constructions shown, a small receptacle or bath 7 9 may be provided for the reception of a starting agent, as for example methy lated spirit, in the well known manner, so

that the vaporize tubes may be efficiently heated to start the operation of the burner.

lVhat I claim is 1. An apparatus for heating heat-radiating tubes, comprising a vaporizing tube, an injector-nozzle communicating with said vaporizing tube, an adjustable rod bearing a valve for controlling the flow of fluid through said nozzle, a burner-body arranged substantially parallel to said vaporizing tube, Bunsen tube connecting said vaporizing tube and said burner body, a tube mounted in said burner body and forming an extension of said Bunsen tube, said burner body having flame orifices directed towards said vaporizing tube, a baffle plate arranged on the outer side, of said vaporizing tube, and perforated nozzles on said burnerbody for directing flame against heat-radiating tubes.

2. An apparatus for heating heat-radiating tubes, comprising a vaporizing tube, an injector-nozzle at one end of said tube, means for controlling the flow of fluid through said nozzle, a burner body arranged substantially parallel to said vaporizing tube, a U-shaped Bunsen tube connecting said vaporizing tube and said burner body, a tube mounted in said burner body and forming an extension of said Bunsen tube, said burner-body having flame orifices directed towards said vaporizing tube, a bafile plate arranged on the outer side of said vaporizing tube, and perforated nozzles on said burner body for directing flame against heat-radiatingtubes.

BENJAMIN BARK. 

